Other

Gm Global Technolgoy Operations, Inc.

Carlo Daniele Ceriani

Luca Giuseppe Pairolero

Fulvio Brosio

Riccardo Graglia

A sensor for exhaust gases of an internal combustion engine includes a sensing element enclosed in a sensor housing. The sensor housing includes a protective cap having a plurality of openings formed therein for allowing flow of exhaust gases through the protective cap towards the sensing element. The sensor further includes at least one heating element for burning exhaust gas deposits on the sensor.

Exhaust sensor for internal combustion engines

Methods for cleaning gas sensors used in an exhaust gas system are provided. The exhaust gas system can include an exhaust gas stream supplied by an exhaust gas source through an exhaust gas conduit, and a gas sensor having a sampling end disposed within the exhaust gas conduit. The methods can include positioning at least one glow plug proximate the gas sensor; and activating the at least one glow plug such that exhaust gas deposits accumulated on the gas sensor sampling end are removed. The methods can optionally further comprise one or more of determining a glow plug activation interval and determining a glow plug activation duration. Systems for performing the disclosed methods are also provided.

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Turin, Italy

Carlo Daniele Ceriani